Spontaneous emission of semiconductor quantum dots in inverse opal SiO2photonic crystals at different temperatures

Luminescence ◽  
2015 ◽  
Vol 31 (1) ◽  
pp. 4-7 ◽  
Author(s):  
Peng Yang ◽  
Yingshu Yang ◽  
Yinghui Wang ◽  
Jiechao Gao ◽  
Ning Sui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spontaneous Emission ◽  
Semiconductor Quantum Dots ◽  
Inverse Opal ◽  
Different Temperatures

Laser-controlled projection of quantum dot dipoles using metal-oxide plasmonic metastructures: keeping spin polarization memory

2021 ◽  
Author(s):  
S. M. Sadeghi ◽  
Waylin Wing ◽  
Rithvik R Gutha ◽  
Christina Sharp ◽  
Dustin Roberts ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Metal Oxide ◽  
Spin Polarization ◽  
Spontaneous Emission ◽  
Complete Loss ◽  
Semiconductor Quantum Dots

It is known that the spontaneous emission of semiconductor quantum dots are mostly unpolarized when they are excited off-resonantly. The complete loss of polarization memory is associated with the ultrafast...

ELECTRIC FIELD EFFECTS ON QUANTUM CORRELATIONS IN THREE COUPLED SEMICONDUCTOR QUANTUM DOTS

2013 ◽  
Vol 11 (01) ◽  
pp. 1350009 ◽  
Author(s):  
S. SHOJAEI ◽  
M. MAHDIAN ◽  
R. YOUSEFJANI
Keyword(s):  
Quantum Dots ◽  
Theoretical Model ◽  
Lower Bound ◽  
Electric Field ◽  
Quantum Discord ◽  
Quantum Correlations ◽  
Semiconductor Quantum Dots ◽  
Electric Field Effects ◽  
Different Temperatures ◽  
Coupled Semiconductor

We study the effect of external electric bias on the quantum correlations in the array of optically excited three coupled semiconductor quantum dots. The correlations are characterized by the quantum discord and concurrence and are observed using excitonic qubits. We employ the lower bound of concurrence for thermal density matrix at different temperatures. The effect of the Förster interaction on correlations will be studied. Our theoretical model detects nonvanishing quantum discord when the electric field is on while concurrence dies, ensuring the existence of nonclassical correlations as measured by the quantum discord.

scholarly journals Enhancement of spontaneous emission of semiconductor quantum dots inside one-dimensional porous silicon photonic crystals

2020 ◽  
Vol 28 (15) ◽  
pp. 22705 ◽  
Author(s):  
Dmitriy Dovzhenko ◽  
Igor Martynov ◽  
Pavel Samokhvalov ◽  
Evgeniy Osipov ◽  
Maxim Lednev ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Porous Silicon ◽  
Photonic Crystals ◽  
Spontaneous Emission ◽  
Semiconductor Quantum Dots ◽  
One Dimensional ◽  
Silicon Photonic

scholarly journals Spectroscopy of PbS and PbSe quantum dots in fluorine phosphate glasses

2018 ◽  
Vol 52 (5) ◽  
pp. 497
Author(s):  
M.S. Kuznetsova ◽  
R.V. Cherbunin ◽  
V.M. Litvyak ◽  
E.V. Kolobkova
Keyword(s):  
Quantum Dots ◽  
Absorption Spectra ◽  
Phosphate Glass ◽  
Semiconductor Quantum Dots ◽  
Phosphate Glasses ◽  
Temperature Behavior ◽  
Narrow Bandgap ◽  
Different Temperatures ◽  
Quantum Confined ◽  
Exciton Transitions

AbstractTransmission spectra of the narrow-bandgap semiconductor quantum dots PbS and PbSe in the fluorine phosphate glass are experimentally studied at different temperatures. Energies of 1s exciton transitions observed in the absorption spectra are used to determine characteristic sizes of the quantum dots under study. A nontrivial temperature behavior of the ground and excited quantum confined states in the quantum dots of different sizes are observed.

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